Subject: Re: [bug#41395] [PATCH] gnu: Update python-prompt-toolkit to version 3.0.5

From: Marius Bakke <[email-masked]>
Date: Sat, 30 May 2020 15:48:18 +0200

Edouard Klein <[email-masked]> writes:

> * gnu/packages/machine-learning.scm (python-iml): Pin implicit
> python-prompt-toolkit dependency to version 2.

I added a [propagated-inputs] here.

> * gnu/packages/python-xyz.scm (python-widgetsnbextension): Pin implicit
> python-prompt-toolkit dependency to version 2.

And here.

> (python-ipywidgets): Update to version 7.5.1.

And removed this.

> (python-ipywidgets): Pin implicit python-prompt-toolkit dependency to version
> 2.

[propagated-inputs]

> (python-jupyter-console): Update to version 6.1.0.

Removed.

> (python-jupyter-console): Pin implicit python-prompt-toolkit dependency to
> version 2.
> (python-jupyter-console): Pin explicit python-prompt-toolkit dependency to
> version 2.

Duplicate.

> (python-prompt-toolkit): Update to version 3.0.5.

I mentioned the changes to [home-page] and [propagated-inputs] here.

> (python-prompt-toolkit-2): New variable
> (prompt-toolkit-2-instead-of-prompt-toolkit): New variable
> (python2-prompt-toolkit): keep at version 2.
> (python-prompt-toolkit-1): inherit from version 2.

And added capitalizations and full stops here.

[...]

> +(define-public python-prompt-toolkit-2
> +  (package (inherit python-prompt-toolkit)
> +    (name "python-prompt-toolkit")
> +    (version "2.0.7")
> +    (source
> +     (origin
> +       (method url-fetch)
> +       (uri (pypi-uri "prompt_toolkit" version ".tar.gz"))
> +       (sha256
> +        (base32
> +         "0fgacqk73w7s932vy46pan2yp8rvjmlkag20xvaydh9mhf6h85zx"))))
> +    (propagated-inputs
> +     `(("python-wcwidth" ,python-wcwidth)
> +       ("python-six" ,python-six)
> +       ("python-pygments" ,python-pygments)
> +       ("python-wcwidth" ,python-wcwidth)))))

Duplicate wcwidth input (fixed).

> +(define-public prompt-toolkit-2-instead-of-prompt-toolkit
> +  (package-input-rewriting/spec
> +   `(("python-prompt-toolkit" . ,(const python-prompt-toolkit-2)))))

So this procedure is extremely greedy, and creates new derivations of
python-sphinx, python-cython and others for the affected packages.  Not
sure what's going on, but went ahead and applied it anyway.

The patches will be pushed shortly.  Thank you!